Can vs can't of street photography in New Zealand

Let’s say a photographer takes some street photography and sells the prints in a gallery.

What is ok vs not ok regarding people being in the photos, that are taken in NZ?

Let’s assume the photographer is not being a d* ck and if someone asks them to not photograph them, they don’t, they don’t misrepresent a subject etc etc
Let’s also assume the photos are not for journalism.

What would make the following ok:

1. Crowd of people in a public place (e.g., crossing the street)
2. A single person in a public place (e.g., crossing the street)
3. Crowd of people in a public-private place (e.g., bar or cafe)
4. Single person in a public-private place (e.g., bar or cafe)
5. Crowd of people on private property which is not open to the public.
6. Single person on private property which is not open to the public

Would permission be needed, would it need to be in writing etc etc? Would it make a difference if the photograph was used to advertise the opening of the show at the gallery?

(I know these are several questions, but it would be silly to split them into several which would then be flagged as duplicates!)
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